Finishing-machine.



FINISHING MACHINE. APPLICATION FILED APR. 19, 1906.

Patented June 8, 1909.

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W. B. 0. HERSHEY & D. B. HUSTON.

FINISHING MAOHINE. 4

APPLIGATION rum APR.19,190.5. v

Patented June 8, 1909.

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TINTTED STATE% PATENT @FFTQE.

WILLIAM B. O. HERSHEY AND DAVID E. HUSTON, OF COLUMBUS, OHIO, ASSIGNORSTO THE EXOELSIOR SEAT COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF OHIO.

FINISHING-MACHINE Specification of Letters Patent.

Application filed. April 19, 1905.

Patented June 8, 1909.

Serial No. 266,461.

To all whom it may concern:

Be it known that we, WILLIAM B. O. HER- SHEY and DAVID E. HUSTON,citizens of the United States, residing at Columbus, in the county ofFranklin and State of Ohio, have invented certain new and usefulImprovements in Finishin -Machines, of which the following is aspecification.

Our invention relates to a new and useful improvement in finishingmachines and more especially to a vehicle body finishing machine.

The invention has for its object the production of a machine em loying arapidly propelled sand papering belt in juxtaposition to which a vehiclebody may be supported so that the sand papering belt may be forced downand caused to travel over the surface of the body irrespective of itsshape.

Another feature resides in work supporting means so arranged as to throwthe work into position and maintain it so until it is fin: ishecl.

Finally the object of the invention is to provide a device of thecharacter described that will be strong, durable, efficient and simpleand comparatively inexpensive to make.

With the above and other objects in view, the invention consists of thenovel details of construction and operation, a referable embodiment ofwhich is describe in the specification and illustrated in theaccompanying drawings, wherein:

Figure 1 is a front elevation showing one of the dust collecting hoodsremoved. Fig. 2 is an end elevation with one of the dust hoods removed.Fig. 3 is a transverse vertical sectional view showing the work inposition and the work holder thrown up into position. Fig. 4 is asimilar view with the work holder thrown down and the work out ofposition. Fig. 5 is a plan view of the belt depressing tool. Fig. 6 isan end elevation of the same, and, Fig. 7 is a transverse sectional viewof the belt and side of a vehicle body having a curved outer surfaceillustrating the belt forced down on the work and the depressing tool inposition thereon.

In the drawings, the numerals 1 and 2 designate the transverse andlongitudinal sills or base of the machine. Projecting vertically fromthe sill 1 and preferably in the central portion thereof are fourvertical posts 3 and 4, although it is to be understood that a greateror less'nurnber of posts may be employed as the occasion may require.The post 4 is somewhat stouter than the other posts and extends aconsiderable distance thereabove, so as to support at its upper end anordinary adjustable hanger 5 upon which is mounted. an idle pulley 6, sosupported on the. said hanger as to be capable of vertical adjustment.Supported at the opposite ends of the longitudinal sill 1 and resting onthe transverse sills 2 are supporting frames or chairs 7 suitablyconstructed and supporting standards 8 which carry at their upper endsbearing boxes 9. Transverse shafts 10 are supported in the bearing boxeslongitudinally of the frames 7 and the transverse sills 2. One of theseshafts 10 carries the usual fixed driving pulley 11 and the loose pulley12 ad j acent thereto. At their front ends the shafts carry band wheels13 around which is passed an endless abrading belt 14 which also passesover the idler 6 and is placed under tension by the vertical adjustmentof the said idler. 1t is of course to be understood that the belt 14 isonly provided upon its outside with an abrading surface, and the innerside which passes over the band wheels 13 and the idlers 6, is smooth sothat it may be readily driven Without marring the peripheries of thesaid Wheels. The abrading belt is in this manner caused to travellongitudinally and substantially parallel to the sill 1 and nearer theupper ends of the posts 3 and 4 and slightly in front of the same, asclearly shown in Figs. 1 and 2. In the rear of each post are arrangedvertical supports 15 resting on the transverse sills 2 and pivotallysupporting the rear ends of forwardly extending work supporting bars 16.The bars 16 extend beyond and beneath the belt 14 and are connected inpairs at their outer ends on each side of the center by strips 17. Thebars 16 are so arranged as to stand substantially horizontal when throwninto their raised position, but sufficient distance below the belt 14 asto support the work out of contact with the said belt. The bars 16 arenotched so as to receive the notched portions of vertical levers 18which are pivotally secured to the said bars by bolts 19. In this mannerthe surfaces of the levers and the bars lie flush and allows them to beplaced in close contact with the sides of the vertical posts. The levers18 extend below the bars 16 and are pivotally connected by means ofbolts 20 to short links 21 pivoted upon the sides of the vertical postsa short distance above the longitudinal sill 1 as clearly illustrated inthe drawings. Adjacent the pivot bolts 20 the vertical posts arerecessed as indicated at 22, so as to receive the head of the bolt andallow the connected ends of the levers and links to swing back andforth. The upper ends of the levers 18 are connected by a longitudinalhandle bar 23 which facilitates the simultaneous swinging of the levers.The vertical post 4 is formed with a groove 25 adapted to snugly receivethe handle bar and hold it when the same is swung upward to throw thework bars 16 into position. It will be obvious that the connectionbetween the links 21 and the levers 22 is in the form of a knucklejoint, thus allovsdng the bars 16 to be swung downward when the upperends of the levers are swung outward and downward by the said handlebar.The workbars slightly in front of the vertical posts are formed withtransverse grooves 26, adapted to snugly receive the usual sill 27 ofthe vehicle body 28.

The outer surface of the ordinary vehicle body is usually inclined orcurved thus making it necessary in finishing to depress the belt so asto evenly contact and pass over the surface which is being finished. Todepress the belt various devices may be used but we prefer to use a toolor block 29 such as is shown in Figs. 5, 6 and 7. In constructing thistool or block, the handle 30 is preferably set at an angle so as toassist the workmen in working at a safe distance from the belt.

In utilizing our machine, the belt is caused to travel rapidly bysuitable power applied to the pulley 11. The operator or workman graspsthe handle bar 23 and pulls the same outward and downward, which breaksthe knuckle joint and causes the pivotally connected ends of the levers18 and links 21 to swing inward, thereby, owing to the pivotalconnection between the bars 16 and levers 18, the latter bars are swungdownward as indicated in Fig. 1. The body 28 is now en- 'gaged over thebars 16 so that its'sill 27 rests in the grooves 26. The operator againgrasplng the handle bar 23, pushes the same upward and backward until itengages in the groove 25 and is thus locked in position. This upwardswinging movement of the upper ends ofthe levers 18 raises the bars 16and the vehicle body 28 into position, at the same time owing to thepivot or fulcrum bolt 19 the connected ends of the levers 18 and thelinks 21 are swung forward until the said levers and links stand invertical alinement with each other as shown in Fig. 3. By observing Fig.3, it will l e seen that when the work is thrown into positioii thepivot bolts 19 and 20 and. the pivot bolts of the links 21 will stand invertical alinement one above the other, thus locking the parts inposition and making it impossible for the bars 16 to again swingdownward until the upper ends of the levers 18 are swung outward. \Vhenthe vehicle body is thus swung into position, the belt 14 is travelingrapidly above and over the same, but out of contact therewith. Theoperator now by means of the tool or block 29 depresses the belt so asto bring its abrading surface into contact with the upper surface of thevehicle body and thus smooth and finish the same. The tool 29 may bemoved along the belt so as to depress the same and force it intoengagement with any 301111 of the exposed surface of the vehicle bodyand in this way he is enabled to treat individually any portions of thevehicle body which may need more smoothing or finishing than otherportions. After the entire exposed surface of the vehicle body has beensmoothed and finished, the bars 16 may again be swung downward and thevehicle body turned so that its other side may be smoothed and finished.\Phen it is desired to finish the ends of the vehicle body, it will benecessary to engage the body over only two of the bars 16 and for thisreason the bars are connected in pairs by the strips 17 as shown inFig. 1. Should it be desired. the ends of two vehicle bodies may besupported upon the opposite pairs of bars 16 at the same time, thusexpediting the finishing.

In Fig. 7 we have shown the side of a vehicle body 28 formed with acurved surface 31 and showing the tool depressing the belt 14 on to thesaid curved surface. It is'o'bvious that the said tool may be workedback and forth so as to force the belt in contact with the curvedsurface and thus as elliciently smooth and finish the said surface as ifit was straight or inclined.

In Fig. 1, we have shown about the band wheel a dust collecting hood 32formed with a spout 33 to which may be connected a suitab e conductingpipe, suitably arranged to convey the dust from the collector. It is tobe understood that a hood 32 is to be arranged about each bandwheel 13,but forms no part of this invention.

Having now fully described our invention, what we claim and desire tosecure by Letters Patent is,

1. In a finishing machine, the combination with a frame and an endlessabrading belt, of

. swinging work supporting devices, and means 923,841 for swingin theWork supporting devices into In testimony whereof We aflix oursignaposition below the belt so as to support the tures in the presenceof two Witnesses. work out of contact with the belt.

2. In a finishing machine, the combination g' gi With Vertical supportsand an endless belt, of pivoted Work supporting bars, and jointedWitnesses:

A. O. HARVEY,

means for swinging the bars into position beneath the belt. E. R. DUNN.

